期刊
APPLIED SURFACE SCIENCE
卷 539, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2020.148241
关键词
Photoelectrochemical detection; Ciprofloxacin; g-C3N4/Ti3C2 composites; Sensor
类别
资金
- National Natural Science Foundation of China [51702173]
- Ningbo Natural Science Foundation of China [2019A610448]
- Guangdong Provincial Key Laboratory of Environmental Pollution and Health [GDKLEPH201808]
In this study, a g-C3N4/Ti3C2 composite material was designed as a photoelectrochemical sensing material for the detection of ciprofloxacin. The introduction of Ti3C2 and visible light improved optoelectronic performance, with a detection limit of 0.13 nM and good reproducibility, selectivity, and long-term stability demonstrated. The real commercial sample detection confirmed the practical application potential of the g-C3N4/Ti3C2 photo-electrocatalyst for high selectivity and sensitivity in CFX detection.
Photoelectrochemical (PEC) process has been demonstrated to exert enormous potential in the fields of analysis, and the rational design of PEC sensors are vital for the practical applications. In this study, the g-C3N4/Ti3C2 composite was proposed as a photoelectrochemical sensing material for the detection of ciprofloxacin (CFX). Characterization methods proved the formation of g-C3N4/Ti3C2 compounds and their superior optoelectronic performance. Moreover, the measurement of PEC properties exhibited that the introduction of Ti3C2 and visible light would improve the electron migration efficiency and the separation of photogenerated electron-hole pairs, thereby displaying the synergistic effect to promote the photoelectric performance. More importantly, the current density of g-C3N4/Ti3C2 was linearly proportional to the concentration of CFX ranging from 0.4 to 1000 nM, and the detection limit (3S/N) was 0.13 nM. In addition, such a PEC sensor demonstrated long-term stability, good reproducibility and selectivity. Finally, the real commercial sample detection was measured to confirm the possibility of practical applications. Thus, the g-C3N4/Ti3C2 photo-electrocatalyst provides a new method for CFX detection with high selectivity and sensitivity.
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